This is a photo taken from a YouTube video made by a "nanny cam." The hidden camera showed a nanny slapping and shaking a 5-month-old baby in a Grasmere home, police said.

STATEN ISLAND, N.Y. -- A couple's worst suspicions were confirmed when a hidden camera showed their 52-year-old nanny slapping and shaking their 5-month-old daughter inside the family's Grasmere home, according to police.

That video -- recorded by a "nanny cam" hidden inside a carbon monoxide detector -- made its way onto YouTube.com the same day as the alleged Jan. 28 incident, a law enforcement source confirmed, with more than 4,500 views so far.

On Sunday, after an investigation by the NYPD's Special Victims Squad, police arrested Mamura Nasirova, of the same Woodlawn Avenue address as the infant's family. Court records state she's a native of Uzbekistan and not a U.S. citizen.

A law enforcement source familiar with the case said the parents -- identified in court records as Mr. and Mrs. Roman Mardakhaev -- resorted to surveillance because of their suspicions about the nanny.

The mother, who wasn't home, saw the video live on a remote feed and rushed home to confront Ms. Nasirova, the source said. The parents then contacted police.

See the video here:

The YouTube video lasts one minute, 18 seconds. It shows a woman, identified as Ms. Nasirova in the title and video description, with her back to the camera.

"While the mother of the child went to the supermarket to buy groceries for the house, she came back and checked the camera [to see] if anything was wrong after she was gone to the store," the video's description reads.

The baby is seated in a small chair. The woman apparently is trying to feed her with a bottle, and at about eight seconds in, she starts slapping the infant's face, while another child sits on a couch nearby.

The woman also shakes the infant by the chest and by the feet, then appears to feed her with a bottle before abruptly lifting her from the chair and walking toward a doorway.

Ms. Nasirova is charged with endangering the welfare of a child and resisting arrest, both misdemeanors, according to information from District Attorney Daniel Donovan's office.

Court papers allege she refused to take her hands from her pockets, and locked her arms to the side and pulled away in an attempt to avoid being arrested.

She was arraigned Monday in Stapleton Criminal Court, where Judge Alan J. Meyer ordered her held on $1,000 bail until her next court appearance, on Friday.

As of Tuesday night, she hadn't made bail and remained locked up on Rikers Island.

Mardakhaev declined to comment Tuesday afternoon.

A Russian parenting website, russianparentsworld.com, added Ms. Nasirova, along with a link to the YouTube video, to its "Nanny Blacklist" page.

"Horrible case of child abuse caught on camera and evidenced in the video below (from a camera installed by the parents). She beat a 5 month old child for not eating food. She was fired the same day by parents, though there was an outrage in our Russian Parents group as everyone felt the parents should have called the police," the site reads, referring to a private Facebook.com group.